Ilkley Moor is part of Rombalds Moor, the moorland between Ilkley and Keighley in West Yorkshire, England. The moor, which rises to 402 m (1,319 ft) above sea level, is well known as the inspiration for the Yorkshire "county anthem" On Ilkla Moor Baht 'at (dialect for 'on Ilkley Moor without a hat'). Geology. During the Carboniferous period (325 million years ago), Ilkley Moor was part of a sea-level swampy area fed by meandering river channels coming from the north.
https://en.wikipedia.org/wiki/Ilkley_Moor